
What are the primary challenges to consider during ADSS cable installation, and how can they be mitigated?
2025-08-14The installation of ADSS cables presents unique challenges due to their all-dielectric, self-supporting nature. The primary challenges and their mitigation strategies are:
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Cable Damage: ADSS cables are sensitive to excessive pulling tension, tight bends, and crushing forces. Mitigation involves using proper stringing equipment with tension control and ensuring the cable's minimum bending radius is never exceeded.
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Electrical Corrosion (Dry-Band Arcing): This is a critical issue, particularly in polluted or coastal environments. It occurs when a conductive layer of dust and salts builds up on the cable, leading to a leakage current and surface degradation. Mitigation includes using a track-resistant outer jacket, performing an electric field analysis to find a low-potential installation point, and using corona rings on high-voltage lines.
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Vibration: Wind-induced Aeolian vibration can cause fatigue damage at support points. This is mitigated by installing spiral vibration dampers or other anti-vibration accessories at the same time the cable is clipped in.
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Sag and Tension: Incorrect sag and tension can lead to a reduced safety factor or excessive movement. Accurate calculations based on span length, weather conditions (wind, ice), and the cable's physical properties are essential.